Abstract
Conjugate heat transfer methodology is used to verify the accuracy of numerical simulation program for the Mark II transonic high pressure turbine stator which is cooled internally by air flowing through radial round pipes,and different turbulence models and transition models is employed to analyze the influence on results.On the basis of it,through injecting mist into the convection cooling channel to discuss the improvement of cooling performance.The cooling air flow speed and inadequate droplet evaporation duo to simple convection cooling structure and two-phase flow cooling performance is not fully play.And then,a compound cooling blade with film cooling and convection cooling techniquesis acquired which is modified from the blade of Mark II,the effects of various parameters including mist concentration and water droplet diameter on the improvement of cooling performance are investigated,meanwhile the impact of mist cooling is presented for transonic cascade flow field and boundary layer.
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